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Table 2 Relationships between clutch sizes and female body mass, laying date, apparent nest survival rate and temperature variables in four populations of two congeneric plovers (GLMM): white-faced plover at Paisha Island (PI), and Kentish plover at Bohai Bay (BH), Qinghai Lake (QH), and Taitema Lake (TL)

From: The allocation between egg size and clutch size depends on local nest survival rate in a mean of bet-hedging in a shorebird

Parameter

Estimate

SE

χ2

P

Clutch size (n = 541)

Intercept

1.197

0.114

  

Populations (BH as baseline)

  

29.019

 < 0.001***

 QH

0.101

2.888

  

 TL

− 0.008

0.053

  

 PI

− 0.175

0.038

  

Female body mass

− 0.000

0.002

0.002

0.965

Laying date

− 0.003

0.001

24.375

 < 0.001***

Ambient temperature

0.011

0.004

8.544

0.003**

Daily temperature difference

− 0.004

0.006

0.431

0.512

Temperature variance

0.060

0.077

0.612

0.434

Apparent nest survival rate

− 0.077

0.038

4.078

0.043*

  1. The parameter Years was entered as a random factor
  2. Significant relationships are indicated as * P < 0.05, **P < 0.01, and *** P < 0.001